Triangular Scaffolding is one of the engineered formwork systems that acts as a temporary structure to support the load of ceiling formwork, concrete slabs, bridges, ramps, and heavy structures. This type of scaffolding is also known as triangular frame, bracing scaffold, or concrete formwork support system.
Components of Triangular Scaffolding
Content list
Triangular Frame: The main structure with triangular design for high load-bearing capacity.
Horizontal Bracing Tube: Provides transverse and longitudinal stability between frames.
Adjustable Jack Head: Ensures precise height adjustment for ceiling formwork leveling.
Base Plate: Distributes the weight of the scaffolding evenly on the ground.
Locking Pin: Connects frames quickly and safely.
Technical Specifications of Standard Triangular Scaffolding
Frame Height: 120, 100, 75 cm
Frame Width: 120 cm (typical)
Vertical Load Capacity: Up to 4 tons per m²
Material: Industrial tube or ST37 steel
Surface Coating: Powder coating or hot-dip galvanization
Locking System: Spring pin or locking nut
Main Applications of Triangular Scaffolding
Formwork for concrete slab ceilings in buildings and towers
Bridge construction projects and heavy industrial structures
Industrial platforms, wide ramps, and concrete warehouses
Formwork for roofs of warehouses, power plants, refineries, and heavy structures
Advantages of Triangular Scaffolding Compared to Other Systems
The use of triangular scaffolding in ceiling formwork and heavy structures offers many benefits that make it the first choice for engineers and contractors:
Exceptional Load-Bearing Capacity
The triangular design is one of the most stable engineering geometries, enabling the scaffolding to withstand very heavy loads at significant heights.Ease of Installation and Dismantling
No special tools or expert teams are required. Frames are simply placed and connected with pins, forming a stable structure.Precise Height Adjustment with Jack Heads
Adjustable threaded jack heads allow millimeter-level control of ceiling or formwork height, which is crucial in structural projects.Reusability and Long Service Life
Made from durable materials, the frames and components can be reused in multiple consecutive projects with proper maintenance.High Safety in Construction Sites
With braced structures, locking connections, and high stability, triangular scaffolding is safer than traditional systems for both workers and structures.
Comparison: Triangular Scaffolding vs. Cuplock Scaffolding
| Feature | Triangular Scaffolding | Cuplock Scaffolding |
|---|---|---|
| Connection Type | Frame with pin & bracing | Crook or wedge joint |
| Installation Speed | Relatively fast | Faster for large surfaces |
| Load Capacity | Very high | High |
| Suitable For | Heavy slabs, bridges, decks | Platforms, sheds, warehouses |
| Height Adjustment | High (with metal jack) | Medium (requires more skill) |
| Cost | Medium | Lower for light projects |
Installation Steps of Triangular Scaffolding
Prepare the site and position frames.
Install triangular frames at proper intervals according to engineering plans.
Connect horizontal bracing tubes with locking pins.
Place adjustable threaded jack heads on top of frames for final leveling.
Check stability, plumb alignment, and conduct load testing if necessary.
Price and Cost Factors of Triangular Scaffolding
Material: Usually galvanized or painted steel; galvanized is more expensive due to rust resistance.
Frame Size & Height: Common heights are 120, 150, and 170 cm; higher frames cost more.
Accessories (Bracings & Jacks): Each project requires varying numbers of horizontal bracings and adjustable jacks, affecting total cost.
Steel Market Fluctuations: Prices are directly influenced by global steel prices and exchange rates.
Buying Guide for Triangular Scaffolding from Mahyar Sepahan
Why Choose Mahyar Sepahan?
Direct production from the factory, without intermediaries
Customizable dimensions and colors
Free technical consultation before purchase
Fast nationwide delivery
Guaranteed welding and material quality
Important Tips When Buying
Ask the manufacturer to provide the exact weight of each frame.
Standard frames come with a technical approval stamp or metal plate.
Check that pins and welded joints are intact and free from cracks.
Wide Applications of Triangular Scaffolding
Formwork for heavy concrete ceilings
Bridge and tunnel construction projects
Construction of power plants and petrochemical facilities
Municipal and road construction projects
Temporary structures in exhibitions and industrial platforms
Technical Specifications of Triangular Scaffolding
Standard Frame Sizes
Triangular scaffolding consists of multiple triangular steel frames, commonly produced in the following sizes:
Frame height: 120 cm
Frame height: 150 cm
Frame height: 170 cm
These frames are connected with horizontal bracing tubes and diagonal braces to ensure structural stability.
Pipe Diameter and Thickness
Horizontal tube diameter: 5 cm
Sheet thickness: 2–2.5 mm
Welding type: Industrial CO₂ welding, tested for quality
Coating type: Electrostatic powder coating or cold galvanization
Comparison of Triangular Scaffolding with Other Types
| Feature | Triangular Scaffolding | Cuplock (Star) Scaffolding | Traditional Tube Scaffolding |
|---|---|---|---|
| Installation Speed | High | Medium | Low |
| Structural Safety | Very High | High | Medium |
| Reusability | High | High | Low |
| Heavy Load Ceiling Capacity | Yes | Limited | No |
| Unit Price | Medium | High | Low |
Installation Steps of Triangular Scaffolding
Ground Preparation:
The ground must be flat and compacted to prevent settlement under load.Frame Installation:
Frames are installed in parallel rows at intervals of about 120 cm.Bracing Installation:
Horizontal bracing tubes are fixed between frames, and diagonal braces are installed in cross form for additional stability.Placement of Adjustable Jacks:
Adjustable jacks are placed on top of the frames to control final height, ensuring perfectly leveled formwork.
Maintenance and Safety Tips for Using Triangular Scaffolding
Regular Inspections
Before each project, all scaffolding components must be checked for cracks, bends, rust, or fractures.
Any looseness or damage at frame or bracing connections must be repaired or replaced immediately.
Safety Standards at Installation Site
Ground must be flat, compacted, and resistant to settlement.
On sloped or uneven surfaces, use reinforcement plates or steel pads.
Proper installation of diagonal bracings is mandatory to resist lateral forces (wind, impact).
Workforce Training
Workers must be trained in both personal safety (harness, safety shoes, helmet, etc.) and technical assembly principles.
Required Certificates and Standards
ISIRI (Iran National Standard) for temporary structures
Mechanical strength test certificates from accredited labs
Surface coating standard (paint or galvanization against corrosion)
CE certificate for international export (if required)
Packaging and Transportation of Triangular Scaffolding
Packaging:
Frames packed in steel pallets of 10 or 20 units.
Bracings and accessories sorted separately with labeling.
Each package includes identification label, net weight, and production date.
Transportation:
Large projects require flatbed trucks or trailers.
Packaging is arranged to prevent sliding or impact during transport.
FAQs about Triangular Scaffolding
What is the maximum safe height?
With standard installation and adjustable jacks, scaffolding can be safely used up to 4–6 meters. For higher heights, multi-layered scaffolding is required.Can triangular scaffolding be rented?
Yes. Many suppliers offer rental services.What is the lifespan of triangular scaffolding?
With proper use, repainting, and maintenance, lifespan exceeds 10 years.
Economic Advantages of Triangular Scaffolding
Lower long-term costs: Durability ensures reuse in multiple projects.
Fast installation: Saves labor time and reduces overall project duration.
Flexibility in purchase/rental: Active second-hand market available.
Leading Triangular Scaffolding Brands in Iran
Mahyar Sepahan: Long-standing producer of formwork and construction equipment.
Pars Sanat: Specialized manufacturer with wide variety.
Keyhan Steel Industries: Supplier of industrial and construction scaffolding.
Buying Guide for Triangular Scaffolding
Metal coating type: Galvanized (rust-resistant, higher cost) or painted steel.
Profile thickness: Thicker profiles mean higher strength.
Compatible ceiling jacks: Ensure jacks fit your scaffolding system.
Project dimensions: Estimate number of frames and braces based on site area.
After-sales service: Choose manufacturers with strong support.
Final Conclusion
Triangular scaffolding is one of the most important and safest formwork systems for large construction projects. Its strong design, easy installation, and reusability make it a cost-effective choice for professional contractors.
Mahyar Sepahan, with extensive experience in manufacturing and supplying scaffolding, is ready to cooperate with national and private projects across Iran.
Contact Us
Factory Address: Km 5, Isfahan–Tehran Road, after Morche Khort
Phone: +98 912 118 0029
Website: mahyarsepahan.com
